Loco motive-boiler



(No Model.)

J. E. WOOTTEN.

I LOGOMOTIVE BOILER. No. 254,581. 7 Patented Mar. 7,1882.

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N. PETERS. P'wlvlilhognpher, Wnhingtun. D. C.

I UN ITEDSTATES PATENT OFFICE.

JOHN E. WOOTTEN, OF PHILADELPHIA, PENNSYLVANIA.

LOCOMOTlVE-BOI LER.

SPECIFICATION forming part of Letters Patent No. 254,581, dated March'7, 1882.

Application filed December 28, 188l. (No model.)

To all whom tit-may concern:

Be it known that 1, JOHN E. \VOOTTEN, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented certain newand useful Improvements in Locomotive- Boilers, of which improvementsthe following is a specification.

My invention relates to locomotive-boilers having a fire-box locatedabove and extended laterally beyond the driving-wheels,combined with acombustion-chamber and a fire-bridge interposed between the combustion-chamber and fire-box, for which Letters Patent of the United States No.192,725 were granted and issued to me under date of July 3, 1877.

The object of my present invention is to enable the waist or cylindricalportion of a locomotive-boiler of the class above referred to to bearranged at as low a levelas practicable, in order that the cab, dome,smoke-stack, 8m, may be attached in proper position and of requiredproportions without unduly elevating the entire structure or the centerof gravity thereof.

To this end my improvements consist in a locomotive-boiler having awaist or barrel combined with afire-box extended laterally beyond andplaced entirely above the bottom line of said waist or barrel; also, inthe combination of a laterallyextended fire-box, a waist or barrelhaving its bottom line in a plane below the bottom of the fire-box, anda waterconnection formed by a curved or inclined bottomed downwardextension of the forward water-space of the firebox.

The improvements claimed are hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a vertical longitudinalcentral section through a locomotive-boiler embodying my improvementsFig. '2, an end view of the same, taken from the rear 5 and Fig. 3, avertical transverse section through the combustion-chamber.

The waist or barrel A of the boiler is fitted with a series of firetubes, to, extending from the smoke-box A to a combustionchamber, Aformed in the end of the waist adjacent to and communicating with thefire-box B, anda fire-bridge, a extends across the lower portion of thecombustionchamber, separating the same from the firebox. A dome, A isplaced dinary attachments.

The cab O can be convenientlylocated about midway of the length of theboiler, or otherwise, if preferred; and the smoke-box is provided with astack, A, of any preferred construction.

The fire-box B is similar to that of Letters Patent No. 192,725, beforereferred to, in the respects of being located entirely above the drivingwheels, and of being extended laterally beyond the same to any desiredextent within the greatest width admissible for passage over the road,and is furnished with a grate, b,furnace-doors b and ash-pans b suitablyarranged relatively to the engineframe and driving-axles.

Under my present invention the fire-box B is, as shown in the drawings,placed entirely above the bottom line of the waist A, by which suchreduction in the height of the latter and its accessories above the railis effected asis of material advantage in avoiding the undue elevationof the center of gravity of the engine, and in admitting of theemployment of a stack, dome, and cab of the height required for thenormal and con venientoperation of the engine within thelimitof extremeheight which obtains with locomotiveboilers as ordinarily constructed.

Inasmuch as the requirements of fast passenger-train service involve theemployment of driving-wheels of comparatively large diameter, myimprovements are of special advantage in' engines designed for suchservice, in enabling the beneficial features of the enlarged fire-box tobe utilized without substantial objection as to resultant height of theenglue.

The waist A and fire box B are united through a water connection, 1),formed by a downward extension of the forward water-space of thefire-box, below the bottom line thereof, the lowest portion of saidwater-connection being at such distance below the bottom line of thewaist as will admit of the insertion and securing of the rivets by whichthe bottom sheet or bar of the water-connection is united thereto, andthe bottom of the water-connection being inclined or curved upwardly oneach side of the center line of the boiler from said lowest portion tothe bottom line of the firebox, that portion of the outside sheet, I),of thefire-box which forms the forward boundary of the waterconnection(which sheet b is flanged outwardly and riveted to the waist)constituting a flange by which so much of the Waist as projects belowthe fire box is united thereto. While the water connection I) may befurther extended downwardly as far as desired to serve as a receptaclefor the deposit of mud and other foreign matters, it is not essentialthat its depth at center below the waist of the boiler shall be anygreater than is required for the insertion and securingof a rivet 5 noris it material whether its bottom be of curved outline or be formed indouble inclines, as shown.

I claim as my invention and desire to secure by Letters Patent- 1. In alocomotive-boiler, the combination,

' substantially as set forth, of a waist or barrel and a fire-boxextended laterally beyond and located entirely above the bottom line ofsaid waist.

2. In a locomotive-boiler, the combination,

substantially as set forth, of a laterally extended fire-box, a waist orbarrel having its bottom line in a plane below the bottom of thefirebox, and a water-connection formed by a curved or inclined bottomeddownward extension of the forward water-space of the fire-box.

3. In a locomotive boiler, a laterally extended fire box having itsouter forward sheet flanged outwardly for connection to the waist andextendeddownwardly below the waist for a sufficient distance to serve asa flange for the reception of the rivets of the bottom waterspace sheetor bar, substantially as set forth.

JOHN E. WOOITEN.

' Witnesses:

J. SNoWDEN BELL, GEORGE T. KELLY.

